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ipv4: Use cork flow in inet_sk_{reselect_saddr,rebuild_header}()
These two functions must be invoked only when the socket is locked (because socket identity modifications are made non-atomically). Therefore we can use the cork flow for output route lookups. Signed-off-by: David S. Miller <davem@davemloft.net>
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3038eeac02
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@ -1103,7 +1103,7 @@ static int inet_sk_reselect_saddr(struct sock *sk)
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struct inet_sock *inet = inet_sk(sk);
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__be32 old_saddr = inet->inet_saddr;
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__be32 daddr = inet->inet_daddr;
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struct flowi4 fl4;
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struct flowi4 *fl4;
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struct rtable *rt;
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__be32 new_saddr;
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struct ip_options_rcu *inet_opt;
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@ -1114,7 +1114,8 @@ static int inet_sk_reselect_saddr(struct sock *sk)
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daddr = inet_opt->opt.faddr;
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/* Query new route. */
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rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
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fl4 = &inet->cork.fl.u.ip4;
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rt = ip_route_connect(fl4, daddr, 0, RT_CONN_FLAGS(sk),
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sk->sk_bound_dev_if, sk->sk_protocol,
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inet->inet_sport, inet->inet_dport, sk, false);
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if (IS_ERR(rt))
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@ -1122,7 +1123,7 @@ static int inet_sk_reselect_saddr(struct sock *sk)
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sk_setup_caps(sk, &rt->dst);
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new_saddr = fl4.saddr;
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new_saddr = fl4->saddr;
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if (new_saddr == old_saddr)
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return 0;
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@ -1152,7 +1153,7 @@ int inet_sk_rebuild_header(struct sock *sk)
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struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
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__be32 daddr;
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struct ip_options_rcu *inet_opt;
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struct flowi4 fl4;
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struct flowi4 *fl4;
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int err;
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/* Route is OK, nothing to do. */
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@ -1166,7 +1167,8 @@ int inet_sk_rebuild_header(struct sock *sk)
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if (inet_opt && inet_opt->opt.srr)
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daddr = inet_opt->opt.faddr;
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rcu_read_unlock();
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rt = ip_route_output_ports(sock_net(sk), &fl4, sk, daddr, inet->inet_saddr,
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fl4 = &inet->cork.fl.u.ip4;
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rt = ip_route_output_ports(sock_net(sk), fl4, sk, daddr, inet->inet_saddr,
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inet->inet_dport, inet->inet_sport,
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sk->sk_protocol, RT_CONN_FLAGS(sk),
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sk->sk_bound_dev_if);
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